Protein
Hemoglobin-haptoglobin-binding protein A
Organism
Haemophilus influenzae
Function
Acts as a receptor for the hemoglobin/haptoglobin complex of the human host and is required for heme uptake. Does not bind hemoglobin alone.
Similarity
Belongs to the TonB-dependent receptor family. Hemoglobin/haptoglobin binding protein subfamily.
Sequence
MTNFRLNLLAYSVMLGLTAGVAYAAQPTNQPTNQPTNQPTNQDGNVSEQLEQINVLGSDNHNDNTPPKIAETIKTAKKPEKEQAQDVKDLVRYETGITVVEAGRFGNSGFAVRGVDENRVAVQIDGLHQAETISSQGFKELFEGYGNFNNTRNTAEIETLKQVTIRKGADSLKSGSGALGGSVSFDTKDARDYLLNKNYYASYKRGYNTADNQNLQTLTLAGRYKYFDAIAVITSRKGHELENYGYKNYNDRIQGREREKADPYRRTQESKLLKFAFQPTENHRLSVVVDLYKQTSKGHDFSYTLKQNTEHMTYDEVELRHTNDKVDRKNLAFTYENFTETPFWDTLKISYSHQKITTTARTDDYCDGNDKCALAGNPLGMKYNQDNQLVGEDGNLAKYKDINTKQTIHEKLPFTKPNEKWRYNRVDWDALKKKYPGVPIYASCIEENNDPSKYCSYDVEIPKKENTFEINGKQYDLLSEADKNVISDEQRLPTNSSYLFSCDGLNCDKDTIQGFEKKGTTVNIPFVVIEKNGKKYAKTEAVANNQLSGPYIFMPSKTGYQTNLWTQRDLTSETKQINLDLTKHLELGKTQHDLSYGGLWSEMEKSMTNISGDSPMNVKWWAQYPHSCDIFLPSSTPNGAPTLNPERTNTLCNNSNVYSFLIPVKTKTGALYFINDFRVNSHIAFNFGYRYDRVKYDPEYIPGKTPKIPDDMVVNLYVKQPTFDDTKVNLPPEELRKKEANAAANIKAIVQPKKFSASSYSVGTTLDPLNWLRLQAKYGKAFRAPTSDEIYFTFLHPDFSIRPNRDLQAETAKTKELALTLHNEIGYVTTSVFDTRYRNFIDLAYKGLYNVQRHSKLTPYHTYQNVNRPNAKVTGWEIAAQISLGKITQFLNGLNLSYKYTYQKGRIDGNIPMNAIQPKTSVYGVSYAHPADKFGLDLYFTHVSAKNAEDTYNMFYKEEGKKDSTIKWRSKSYTTIDLLGYIKPIKNLTLRAGVYNLTNRKYITWDSARSIRPFGTSNMINQKTGEGINRFYAPGRNYRMSVQFEF